CAJ | 학술논문

采用涂层法在玻璃基底上分别制备了纯聚氯乙烯( PVC)薄膜和添加水热法制备的钙钛矿型铌酸银( AgNbO3)光催化剂的复合薄膜( PVC-wAgNbO3,其中w为AgNbO3的质量分数),在500 W氙灯照射120 min条件下进行了薄膜的光催化降解实验.利用X射线衍射仪( XRD)、扫描电子显微镜( SEM)和傅里叶变换红外光谱仪( FTIR)等对光照前后薄膜的形貌及光催化降解过程进行了表征.结果表明,在光催化降解过程中纯PVC薄膜失重率为4.09%,而PVC-3%AgNbO3, PVC-6%AgNbO3, PVC-9%AgNbO3和PVC-15%AgNbO3复合薄膜分别失重20.36%,23.52%,27.62%和33.83%. AgNbO3光催化剂加速了PVC薄膜的降解,且随着AgNbO3光催化剂添加量的增加, PVC薄膜的光催化降解速率不断增大.
채용도층법재파리기저상분별제비료순취록을희( PVC)박막화첨가수열법제비적개태광형니산은( AgNbO3)광최화제적복합박막( PVC-wAgNbO3,기중w위AgNbO3적질량분수),재500 W선등조사120 min조건하진행료박막적광최화강해실험.이용X사선연사의( XRD)、소묘전자현미경( SEM)화부리협변환홍외광보의( FTIR)등대광조전후박막적형모급광최화강해과정진행료표정.결과표명,재광최화강해과정중순PVC박막실중솔위4.09%,이PVC-3%AgNbO3, PVC-6%AgNbO3, PVC-9%AgNbO3화PVC-15%AgNbO3복합박막분별실중20.36%,23.52%,27.62%화33.83%. AgNbO3광최화제가속료PVC박막적강해,차수착AgNbO3광최화제첨가량적증가, PVC박막적광최화강해속솔불단증대.
Pure polyvinyl chloride ( PVC ) film and PVC-AgNbO3 hybrid films were prepared on glass sub-strates via a coating method. The photocatalytic degradation experiments were carried out under xenon lamp irradiation. The samples were characterized by X-ray diffractometer ( XRD ) , scanning electron microscope ( SEM) , and Fourier transform infrared spectrometer( FTIR) . The results show that PVC-AgNbO3 hybrid films have much higher photocatalytic degradation activity than pure PVC film. The photodegradation performance of the films can be evaluated directly by their mass loss. The mass loss of the pure PVC film was about 4. 09%after irradiation under xenon lamp for 120 min, that of the PVC-3% AgNbO3 , PVC-6% AgNbO3 , PVC-9%AgNbO3 , and PVC-15% AgNbO3 films reached about 20. 36%, 23. 52%, 27. 62% and 33. 83% after irra-diation for 120 min, respectively. The mass loss of PVC increased with the increase of the content of AgNbO3 . This result prove that the presence of AgNbO3 remarkably promote the photocatalytic degradation rate of PVC film.